mapstraction - jasagiri @ ウィキ

本家
http://www.mapstraction.com/

Rails Plugins( YM4R )
http://ym4r.rubyforge.org/

ym4r_mapstraction
http://github.com/nofxx/ym4r_mapstraction/tree/master

mapstraction v2
http://dfowler.geeksbox.co.uk/files/mapstraction-2/1/wip.htm

http://dfowler.geeksbox.co.uk/demos/mapstraction-2/latest/index.htm